STIEBEL ELTRON DHC 3/3.5-1 Trend User manual

OPERATION AND INSTALLATION
FUNCIONAMIENTO E INSTALACIÓN
UTILISATION ET INSTALLATION
Electronically Controlled Electric Tankless Water Heaters
Calentadores de Agua Electrónicos sin Tanque
Chauffe-eau Électriques sans Réservoir à Commande Électronique
» DHC 3/3.5-1 Trend
» DHC 4/6-2 Trend
»DHC8/10-2Trend
» DHC 12/15-2 Trend
Certified to ANSI/UL Std. 499
Conforms to CAN/CSA Std. C22.2 No. 64
Certificación ANSI/UL Std. 499
Conforme a CAN/CSA Std. C22.2 No.64
Certifié à la norme ANSI/UL Std. 499
Conforme à la norme CAN/CSA Std. C22.2 No.64
Tested and certified by WQA to NSF/ANSI/CAN372
for lead free compliance.
Probado y certificado por WQA NSF/ANSI/CAN 372
para el cumplimiento de las regulaciones sin plomo.
Testé et certifié par WQA à la NSF/ANSI/CAN 372
pour une utilisation sans plomb.

2| DHC Trend www.stiebel-eltron-usa.com
CONTENTS
QUICK START GUIDE
SPECIAL INFORMATION
OPERATION
1. General information ___________________________________________ 5
1.1 Safety instructions__________________________________________________ 5
1.2 Other symbols in this documentation __________________________ 5
1.3 Units of measurement _____________________________________________ 5
2. Safety____________________________________________________________ 5
2.1 Intended use_________________________________________________________ 5
2.2 General safety instructions _______________________________________ 5
2.3 Test symbols _________________________________________________________ 6
2.4 Licenses / certificates ______________________________________________ 6
3. Register your product _________________________________________ 6
4. Water heater description______________________________________ 7
4.1 Recommended settings ___________________________________________ 7
5. Cleaning, care and maintenance _____________________________ 7
6. Troubleshooting ________________________________________________ 7
INSTALLATION
7. Safety____________________________________________________________ 8
7.1 General safety instructions _______________________________________ 8
7.2 Instructions, standards and regulations _______________________ 8
8. Water heater description______________________________________ 8
8.1 Standard delivery___________________________________________________ 8
9. Preparation _____________________________________________________ 8
9.1 Installation site______________________________________________________ 8
9.2 Minimum clearances_______________________________________________ 9
10. Installation______________________________________________________ 9
10.1 Standard wall-mounted installation ____________________________ 9
10.2 Water connections__________________________________________________ 9
10.3 Aerator installation at connected faucet ______________________10
10.4 Electrical connection______________________________________________10
10.5 Electrical connection with short power cable _______________11
10.6 Wiring block ________________________________________________________12
11. Commissioning ________________________________________________12
11.1 Temperature setting via jumper slot___________________________12
11.2 Changing power output via jumper slot ______________________12
11.3 Initial start-up______________________________________________________12
11.4 Operation with preheated water _______________________________13
11.5 Recommissioning__________________________________________________13
12. Water heater shutdown ______________________________________13
13. Service information ___________________________________________13
14. Maintenance ___________________________________________________ 14
14.1 Draining the water heater _______________________________________14
14.2 Cleaning the filter screen ________________________________________14
15. Troubleshooting _______________________________________________15
16. Specification ___________________________________________________16
16.1 Dimensions__________________________________________________________16
16.2 Wiring diagrams ___________________________________________________16
16.3 Hot water output___________________________________________________17
16.4 Application areas/conversion table ____________________________17
16.5 Fault conditions ____________________________________________________17
16.6 Data tables __________________________________________________________18
17. Spare parts ____________________________________________________20
18. Warranty _______________________________________________________21

QUICK START GUIDE
ENGLISH
www.stiebel-eltron-usa.com DHC Trend | 3
QUICK START GUIDE
Before turning on power to the water heater, you MUST flush all air out of the
system, then engage the AE3 safety switch. The unit will NOT operate until
the AE3 safety switch has been engaged.
1 Mount the unit to the wall (see section 10.1, “Standard wall-mounted installation”, pg. 9).
2 Hook up water connections (see section 10.2, “Water connections”, pg. 9).
3 Hook up electrical connections, but keep circuit breaker off. (See section 10.4, “Electrical connec-
tion”, pg. 10)
PLQ
12
D0000053277
4 Open and close all connected draw-off valves at least 5 times, for at least 3 minutes total,
until all air has been purged from the pipework and the water heater.
5 Ensure there are no water leaks from any plumbing connections.
D0000094561-b
6 Engage the AE3 safety switch by firmly pressing the white reset button until it clicks and fully
locks in place (the water heater is delivered with the safety switch disengaged).
7 Turn on power to the water heater at the circuit breaker in the breaker panel.

SPECIAL INFORMATION
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SPECIAL INFORMATION
- Read this entire manual. Failure to follow all the
guides, instructions and rules could cause personal
injury or property damage. Improper installation, ad-
justment, alteration, service and use of this unit can
result in serious injury.
- This unit must be installed by a licensed electrician
and plumber. The installation must comply with all
national, state and local plumbing and electric codes.
Proper installation is the responsibility of the install-
er. Failure to comply with the installation and operat-
ing instructions or improper use voids the warranty.
- Save these instructions for future reference. The
installer should leave these instructions with the
consumer.
- If you have any questions regarding the installation,
use or operation of this water heater, or if you need
any additional installation manuals, please call our
technical service line at 800.582.8423 (USA and Can-
ada only). If you are calling from outside the USA or
Canada, please call USA 413.247.3380 and we will
refer you to a qualified Stiebel Eltron service repre-
sentative in your area.
- The water heater is suitable for supplying a shower in
many climates (shower operation). If the water heater
is also or exclusively used for shower operation, the
qualified contractor must adjust the temperature set-
ting range to 122°F (50°C) or less using the internal
anti-scalding protection on the water heater. When
using preheated water, it must be ensured that the
inlet temperature does not exceed 131°F (55°C).
- The specified voltage must match the power supply.
See the type plate on the right-hand side of the water
heater for full information.
- Ensure the water heater can be separated from the
power supply by a circuit breaker that disconnects all
poles with at least 1/8˝ (3 mm) contact separation.
- CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE OR
SHOWER STALL.
DO NOT CONNECT TO A SALT-REGENERATED WATER
SOFTENER OR A SALT-WATER WATER SUPPLY.
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY.
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED
BY A CLASS A GROUND FAULT INTERRUPTER
USE BONDING CONDUCTOR IN ACCORDANCE WITH
THE CANADIAN ELECTRICAL CODE, PART I
- The water heater must be properly grounded. See
section 16.2, “Wiring diagrams,” pg. 16.
- The water heater must be permanently connected to
fixed wiring. For use on an individual branch circuit
only. See section 16.2, “Wiring diagrams,” pg. 16.
- Secure the water heater as described in chapter 10,
“Installation”, pg. 9.
- Observe the minimum permissible water supply
pressure of 26.1 psi (1.8 bar). See section 16.6, “Data
tables,” pg. 18.
- Observe the maximum permissible water supply
pressure of 145 psi (10 bar). See section 16.6, “Data
tables,” pg. 18.
- Drain the water heater as described in section 14.1,
“Draining the water heater”, pg. 14.

OPERATION
General information
ENGLISH
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OPERATION
1. General information
The chapters “Special information” and “Operation” are intended
for both users and qualified contractors.
The chapter “Installation” is intended for qualified contractors.
Note
Read these instructions carefully before using the water
heater and retain them for future reference.
Pass on the instructions to a new user if required.
1.1 Safety instructions
1.1.1 Structure of safety instructions
!
KEYWORD Type of risk
Here, possible consequences are listed that may result
from failure to observe the safety instructions.
f Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns
(burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious in-
jury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-serious
or minor injury.
1.2 Other symbols in this documentation
Note
General information is identified by the adjacent symbol.
f Read these texts carefully.
Symbol Meaning
Material losses
(water heater damage, material losses, and installation site
damage)
f This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Units of measurement
Note
All measurements are given in inches (millimeters) unless
otherwise stated.
2. Safety
2.1 Intended use
The DHC Trend is suitable for heating domestic hot water or for
reheating preheated water. The water heater can supply one or
more draw-off points such as hand washing, kitchen, or utility sinks.
Examples:
- Restroom sinks in commercial/industrial facilities and homes
- Kitchen areas in commercial /industrial facilities and homes
- Special uses in photo developing shops, laboratories etc.
Water will not be reheated if the maximum inlet temperature for
reheating is exceeded.
The water heater is intended for domestic use. It can be used safely
by untrained persons. The water heater can also be used in non-do-
mestic environments, e.g. in small businesses, as long as it is used
in the same way.
Any other use beyond that described shall be deemed inappropriate.
Observation of these instructions and of the instructions for any
accessories used is also part of the correct use of this water heater.
2.2 General safety instructions
DANGER: Burns
Water temperatures over 125 °F (52°C) can cause severe
burns instantly or death from scalding. A hot water scald-
ing potential exists if the thermostat on the water heater
is set too high. Households with small children, disabled
or elderly persons may require that the thermostat be set
at 110°F (43°C) or lower to prevent possible injury from
hot water.
!
!

OPERATION
Register your product
6| DHC Trend www.stiebel-eltron-usa.com
CAUTION: Burns
If operating with preheated water, e.g.from a solar ther-
mal system, the DHW temperature may vary from the
selected set temperature.
CAUTION: Burns
During operation, the tap can reach temperatures up to
149°F (65 °C).
There is a risk of scalding at outlet temperatures in excess
of 110°F (43°C).
!
DANGER: Injury
Please read and follow these instructions. Failure to follow
these instructions could result in serious personal injury
or death.
!
CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE
OR SHOWER STALL. DO NOT CONNECT TO A
SALT-REGENERATED WATER SOFTENER OR A WATER
SUPPLY OF SALT WATER.
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY.
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED BY A
CLASS A GROUND FAULT INTERRUPTER
USE BONDING CONDUCTOR IN ACCORDANCE WITH THE CA-
NADIAN ELECTRICAL CODE, PART I
DANGER: Electrocution
Before proceeding with any installation, adjustment,
alteration, or service of this appliance, all circuit break-
ers and disconnect switches servicing the appliance
must be turned off. Failure to do so could result in seri-
ous personal injury or death.
DANGER: Electrocution
Never remove the water heater‘s cover unless the elec-
tricity servicing the water heater is turned off. Failure to
do so could result in personal injury or death.
WARNING Electrocution
The connection to the power supply is only permissible as
a permanent connection in conjunction with a ¾˝Romex
clamp. Ensure the water heater can be separated from
the power supply by an isolator that disconnects all poles
with at least 1/8˝(3mm) contact separation.
!
DAMAGE TO THE WATER HEATER AND THE ENVIRON-
MENT:
The water heater must be installed by a licensed electrician
and plumber. The installation must comply with all nation-
al, state and local plumbing and electric codes.
Service of the water heater must be performed by qualified
service technicians.
!
DAMAGE TO THE WATER HEATER AND THE ENVIRON-
MENT:
Supply this appliance only from a grounded system. A
green terminal (or a wire connector marked “G”, “GR”,
“GROUND”, OR “GROUNDING”) is provided for wiring the
appliance. To reduce the risk of electric shock, connect
this terminal or connector to the grounding terminal of the
electric service or supply panel with a continuous copper
wire in accordance with the electrical installation code.
!
WARNING: Injury
Where children or persons with limited physical, sensory
or mental capabilities are to be allowed to control this
water heater, ensure that this will only happen under su-
pervision or after appropriate instructions by a person re-
sponsible for their safety. Children should be supervised to
ensure that they never play with the water heater.
Where children or persons with limited physical, sensory or mental
abilities are allowed to use this water heater, we recommend asking
the qualified contractor to set a permanent “Internal anti-scalding
protection” temperature limit. See section 11.1, “Temperature set-
ting via jumper slot,” pg. 12.
!
Material losses
The user should protect the water heater against frost.
2.3 Test symbols
See type plate on the water heater.
2.4 Licenses / certificates
- UL (USA) Std. 499
- CSA (Canada) Std. C22.2 No. 64
3. Register your product
You must register this product within 90 days of pur-
chase on our web site in order to activate the standard
warranty. Go to our web site at
www.stiebel-eltron-usa.com and click on “Register
Your Product.”
Before beginning the registration process, we suggest that you
gather the necessary information which will be as follows:
Type, Example: DHC 4/6-2 Trend (from the label that is on the
unit)
Number listed after “No.”
Place of Purchase
Purchase Date
First & Last Name
Email address
Physical Address
Phone Number

OPERATION
Water heater description
ENGLISH
www.stiebel-eltron-usa.com DHC Trend | 7
Installation Date
If you have any questions concerning the registration pro-
cess or warranty, please contact Stiebel Eltron USA directly at
800.582.8423.
4. Water heater description
The water heater switches on automatically as soon as a hot water
valve at the tap is opened. When you close the tap, the water heater
switches off automatically.
From the activation flow rate, the control unit regulates the correct
heating output, subject to the temperature selected internally via
jumper by a contractor during installation, and the current cold
incoming water temperature.
If the water heater is operated with preheated water and the inlet
temperature exceeds the chosen set temperature, the water is not
heated further.
Fixed Domestic Hot Water (DHW) temperature
The water heater heats water as it flows through the unit.
The fixed DHW outlet temperature can be adjusted by a contractor
via jumper during installation. The factory default value is 100 °F
(38°C). Other selectable values include: 110°F (43°C), 122°F (50°C),
140°F (60 °C).
Heating system
The Direct Coil™heating system is comprised of a pressure-tested,
glass-reinforced polyamide heating chamber with a nichrome wire
direct heating coil. It is suitable for hard and soft water areas and
is largely insusceptible to scale build-up. The Direct Coil™heating
system ensures rapid and efficient DHW production.
Note
The water heater is equipped with an air detector that
largely prevents damage to the heating system. If, during
operation, air is drawn into the water heater, the water
heater shuts down the heating output for one minute to
protect the heating system.
4.1 Recommended settings
The DHC Trend electric tankless water heater offers maximum conve-
nience and accuracy when providing DHW. If you do need to operate
the water heater with a thermostatic valve, we recommend adjusting
the required set temperature on the thermostatic valve.
4.1.1 Following an interruption to the water supply
!
Material losses
To ensure that the direct coil heating system is not damaged
following an interruption to the water supply, the water
heater must be restarted by taking the following steps.
f Disconnect the water heater from the power supply by
turning off the connected circuit breaker.
f Open and close all connected draw-off valves at least 5
times, for at least 3 minutes total, until all air has been
purged from the pipework and the water heater.
f Switch the power back at the circuit breaker back ON.
5. Cleaning, care and maintenance
f Never use abrasive or corrosive cleaning agents. A damp cloth
is sufficient for cleaning the water heater.
f Check the taps regularly. Limescale deposits at the tap outlets
can be removed using commercially available descaling agents.
6. Troubleshooting
Problem Cause Solution
The water heater will not
start despite the faucet
being fully open
There is no power Check to ensure circuit
breaker in breaker panel
hasn’t tripped. Reset if
necessary
The white AE3 safety
switch has not been
engaged during initial
startup. Activate if neces-
sary (See section 11.3.1,
“Initial AE3 safety switch
activation,” pg. 13). If
the AE3 switch has tripped
after initial installation,
contact a qualified con-
tractor to fix the cause
The aerator in the tap or
the shower head is scaled
up or dirty
Clean and/or descale the
aerator or shower head
The water supply has
been interrupted
Vent the water heater and
the cold water inlet line
When hot water is being
drawn off, cold water
flows for a short period
The air detector detects
air in the water. It switch-
es off the heating output
briefly
The water heater restarts
automatically after 1min-
ute
If you cannot solve the problem, contact your qualified contractor.
To facilitate and speed up your inquiry, please provide the serial
number from the type plate (000000-0000-000000). For live technical
assistance, please contact us at 800.582.8423. Alternatively, you may
email us at [e-mail]
Nr.: 000000-0000-00000
D0000094552-b

INSTALLATION
Safety
8| DHC Trend www.stiebel-eltron-usa.com
INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis-
sioning, maintenance and repair of the water heater.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability only
if original accessories and spare parts intended for the water heater
are used.
!Material losses
Observe the maximum inlet temperature. Higher tempera-
tures may damage the water heater. You can limit the max-
imum inlet temperature by installing a central thermostatic
valve.
WARNING Electrocution
This water heater contains capacitors which are discharged
when disconnected from the power supply. The capacitor
discharge voltage may briefly exceed60VDC.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations
and instructions.
- The electrical resistivity of the water must not fall below that
stated on the type plate. In a linked water network, factor in
the lowest electrical resistivity of the water. Your water supply
utility will advise you of the electrical resistivity or conductivity
of the water in your area.
8. Water heater description
8.1 Standard delivery
The following are delivered with the water heater:
- Filter screen, factory installed in cold water inlet
- Jumper for temperature selection, attached
- Jumper for power output switching, attached
- Jumper, spare, attached
- 2 x mounting screws
- 2 x wall anchors
- 0.5 gpm (1.9 l/min) flow-reducer/aerator [DHC 3/3.5-1 Trend
only]. See section 10.3, “Aerator installation at connected fau-
cet,” pg. 10, for more information.
- 2 x 0.5 gpm (1.9 l/min) and 1 x 1.0 gpm (3.8 l/min) flow-re-
ducer/aerators [DHC 4/6-2 Trend only]. See section 10.3,
“Aerator installation at connected faucet,” pg. 10, for more
information.
9. Preparation
9.1 Installation site
!Material losses
Install the water heater in a room that is free from the risk
of frost.
fInstall DHC Trend in a frost free area. If frost may occur, remove
the unit before freezing temperatures set in.
fAlways install the water heater vertically with plumbing fittings
pointing downward. Install the water heater near the draw-off
point to minimize pipe runs and thermal losses.
fTaps: Do not use open vented or non-pressurized taps.
The water heater is suitable for under-sink and over-sink installa-
tion.
Typical under-sink installation
D0000089950-a
6
5
13
2
7
4
1 Electrical junction box
2 ½˝ water supply line for faucet installation
3 Shut-off valve
4 Cold water supply
5 Sink
6 Cold valve (right)
7 Hot valve (left)
Note
fInstall the water heater flush to the wall. The wall
must have sufficient load bearing capacity.

INSTALLATION
Installation
ENGLISH
www.stiebel-eltron-usa.com DHC Trend | 9
9.2 Minimum clearances
Ý
Ý
 Ý
 Ý
D0000079442
f Maintain the minimum clearances to ensure trouble-free oper-
ation of the water heater and facilitate maintenance work.
10. Installation
Factory default settings DHC
3/3.5-1
Trend
DHC
4/6-2
Trend
DHC
8/10-2
Trend
DHC
12/15-2
Trend
Internal temperature setting, °F (°C) 100 (38) 100 (38) 100 (38) 100 (38)
Power output @ 120V 3.5 kW - - -
@ 208V -4.5 kW 7.2 kW 10.8 kW
@ 240V - 6.0 kW 9.6 kW 14.4 kW
10.1 Standard wall-mounted installation
10.1.1 Preparing the power cable
4Ǭ–5ǩÝ (125–130 mm)
D0000094559-b
f Prepare the power cable.
10.1.2 Mounting instructions
f Install DHC Trend as close as possible to the hot water draw-off
point, for example, directly underneath the sink.
f Install DHC Trend in a frost free area. If frost may occur, remove
unit before freezing temperatures set in.
f Observe minimum clearances on all sides to ensure unob-
structed servicing if necessary.
f Remove plastic cover by loosening the screw on the bottom.
Lift cover off from the bottom.
D0000094555-b
f Mark the 2drill holes, referencing their position using the
water heater rear panel as a guide.
f Set water heater rear panel aside and drill the 2 marked holes.
f Install wall anchors in the wall, then insert and tighten each
mounting screw partially. Screws and plastic wall anchors for
mounting on drywall or wood are provided.
f Hang the unit on the 2 mounting screws, ensuring the rear of
the unit is flush against the wall.
f Once the unit is in position, mount the unit securely to the wall
by fully tightening the 2 mounting screws.
D0000089951-a
10.2 Water connections
!
CAUTION: DO NOT INSTALL IN A BATH ENCLOSURE OR
SHOWER STALL OR CONNECT TO A SALT-REGENERATED
WATER SOFTENER OR A WATER SUPPLY OF SALT
WATER
FOR USE ON AN INDIVIDUAL BRANCH CIRCUIT ONLY
CAUTION: CONNECT ONLY TO A CIRCUIT PROTECTED BY A
CLASS A GROUND FAULT CIRCUIT INTERRUPTER
USE COPPER CONDUCTORS ONLY
USE BONDING CONDUCTOR IN ACCORDANCE WITH THE
CANADIAN ELECTRICAL CODE, PART I
!
Material losses
Carry out all water connection and installation work in
accordance with regulations.
!
Material losses
Excessive heat from soldering on copper pipes near the
DHC may cause damage to the unit or the plastic filter
screen located in the cold water inlet.

INSTALLATION
Installation
10 | DHC Trend www.stiebel-eltron-usa.com
NOTICE
The cold water connection to the unit MUST be disconnected
periodically in order to clean the filter screen. It is required
to use water connections that are easily detachable such as
braided steel flex connectors.
NOTICE
Hard water or water with a high mineral count may dam-
age the unit. Damage to the unit caused by scale or a high
mineral count is not covered under the warranty.
NOTICE
Tankless water heaters such as the DHC Trend are not re-
quired to be equipped with a temperature and pressure
relief valve (T&P). If the local inspector will not pass the
installation without a T&P, it should be installed on the hot
water outlet side of the unit.
10.2.1 Permissible water connection materials
f The DHC’s hot water outlet (left) is designed for connection to
copper tubing, PEX tubing or a braided stainless steel hose
with a ½˝ NPT female tapered thread.
f The plumbing on the cold water inlet side (right) needs to be
such that it can easily be removed to allow access to the inlet
filter screen. The easiest way to achieve this is to use a braided
steel flex connector with a ½˝ female NPT connection.
!
Material losses
If plastic pipework systems are used, take into account the
maximum inlet temperature and the maximum permissible
pressure.
10.2.2 Flow rate
f Ensure that the minimum activation flow rate for switching on
the water heater is met: 0.264 gal (1.0 l/min).
f If the required minimum activation flow rate is not met when
the draw-off valve is fully opened, increase the water line pres-
sure. Minimum supply pressure is 26.1 psi (1.8 bar).
10.2.3 Water connection instructions
!
Material losses
If soldering near the unit is necessary, please direct the
flame away from the housing of the unit in order to avoid
damage. Note that excessive heat from soldering (not rec-
ommended) near the cold water inlet fitting may damage
the plastic filter screen located inside it.
All plumbing work must comply with national and applicable state
and local plumbing codes.
Cold water connection (inlet) is on the right side of the unit, hot
water connection (outlet) is on the left side of unit.
f A pressure reducing valve must be installed if the cold water
supply pressure exceeds 150 psi (10 bar).
f Make certain that the cold water supply line has been flushed
to remove any scale and dirt.
f Install shut-off valve in cold water line as shown in the illus-
tration on page 8. This allows the unit to be easily isolated for
maintenance purposes.
D0000094555-b
f Connected braided steel flex connectors (recommended for hot
outlet, required for cold inlet, not supplied) to the twin ½˝ NPT
male connectors.
f Open the shut-off valve in the cold water inlet line.
When all plumbing work is completed, check for leaks and take
corrective action before proceeding.
10.3 Aerator installation at connected faucet
DHC 3/3.5-1 Trend ships with a 0.5 gpm (1.9 l/min) pressure com-
pensating flow-reducer/aerator that must be installed on the faucet
the water heater is connected to. Failure to install the aerator may
result in lower water temperatures than desired.
DHC 4/6-2 Trend ships with a 1.0 gpm (3.8 l/min) aerator and
2x 0.5gpm (1.9 l/min) aerators, allowing for maximum installation
flexibility. A single 0.5 gpm or 1.0 gpm aerator (depending on re-
quired temperature rise) should be installed when the unit is used
at the [low] power output setting (jumper position 1). At the [high]
power output setting (factory default, jumper position 2), the unit
may be plumbed to a single sink using the 1.0 gpm aerator, or to two
sinks using the 2 x 0.5 gpm aerators. Failure to install the aerator(s)
may result in lower water temperatures than desired.
10.4 Electrical connection
WARNING: Electrocution
Before beginning any work on the electric installation,
be sure that main breaker panel switches are “Off” to
avoid any danger of electric shock. All mounting and
plumbing must be completed before proceeding with
electrical hook-up.
The unit must be properly grounded in accordance with
state and local codes, or in absence of such codes, in
accordance with national electric code or the Canadian
electric code. Failure to electrically ground the product
could result in serious personal injury or death.